cheap fencing

I always thought it would be cool to put up LED panels for fencing.
That way you could put any color, scene, or anything you wanted, like a machine gun nest with moving Germans, or a lion cruising the fenceline.

The possibilities one could use would be pretty much endless.
UFO's
Aliens
Animals
Dino's
Dragons
Indians
Holy crap, and then you could get sounds and everything.

Example;
Someone comes to close to your fence and a cop appears with a flashlight shining at them say's "HEY, what do you think you are doing?"
"You have 10 seconds before I open fire." (And he could, but just the sounds :-))